Is nitrogen harmful to the human body?

Nitrogen is a chemical gas that often appears in various books. The air we breathe contains a certain amount of nitrogen. Nitrogen itself is a colorless, odorless gas and contains no toxins. Usually, after nitrogen is pressurized, it becomes the liquid nitrogen that we are all familiar with. Liquid nitrogen is also widely used in industry. So is nitrogen harmful to the human body? Let me briefly introduce it to you below.

Nitrogen is not harmful to the human body. Nitrogen is a colorless, tasteless, odorless gas under normal conditions and is generally non-toxic. Nitrogen accounts for 78.12% (volume fraction) of the total atmosphere. Under standard conditions, the gas density is 1.25g/L. The solubility of nitrogen in water is very low. At normal temperature and pressure, only about 0.02 volumes of nitrogen are dissolved in 1 volume of water. It is a gas that is difficult to liquefy. The solubility in water is very small. At 283K, one volume of water can dissolve about 0.02 volume of N2. Nitrogen will liquefy into a colorless liquid at extremely low temperatures. When the temperature is further lowered, it will form a white crystalline solid. In production, black steel cylinders are usually used to hold nitrogen.

Nitrogen oxides combine with water in the air and eventually turn into nitric acid and nitrates. Nitric acid is one of the causes of acid rain; it and other pollutants can produce photochemical smog pollution under certain conditions. The hazards of acid rain are multifaceted, including direct and potential harm to human health, ecosystems and building facilities. Acid rain can reduce the immune function of children, increase the incidence of chronic pharyngitis and bronchial asthma, and increase the incidence of eye and respiratory diseases in the elderly.

Through the introduction of the above content, I believe everyone has already known that nitrogen is harmless to the human body. Nitrogen itself is a colorless, odorless, non-toxic gas that enters the human body through our breathing. We expel nitrogen at the same time as we expel carbon dioxide. However, if nitrogen combines with other chemicals, such as "acid rain", it will cause certain harm to the human body.